Study of $P$ and $CP$ symmetries in $Ξ^+_c\rightarrow Ξ^-π^+π^+$ at electron-positron collider
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866918242893692928 |
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| author | Wang, Yunlu Xiao, Yunlong Hong, Pengcheng Ping, Ronggang |
| author_facet | Wang, Yunlu Xiao, Yunlong Hong, Pengcheng Ping, Ronggang |
| contents | Symmetry studies represent one of the most promising frontiers in particle physics research. This investigation focuses on exploring $P$ and $CP$ symmetries in the charm system through the measurement of asymmetry decay parameters in the three-body decay of $Ξ_c^{+}$. Incorporating electron and positron beam polarization effects and utilizing the helicity formalism, we characterize the decay of $Ξ_c^{+}$ and its secondary hyperons through asymmetry decay parameters. The complete angular distribution formula for these decays has been systematically derived. Our study evaluates the sensitivity of the asymmetry parameters for the $Ξ_c^{+} \to Ξ^{-}π^{+}π^{+}$ decay channel under various data sample sizes and beam polarization scenarios. These findings establish a robust theoretical framework for future experimental studies at the STCF, providing valuable insights for symmetry investigations in the charm sector. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_15320 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Study of $P$ and $CP$ symmetries in $Ξ^+_c\rightarrow Ξ^-π^+π^+$ at electron-positron collider Wang, Yunlu Xiao, Yunlong Hong, Pengcheng Ping, Ronggang High Energy Physics - Phenomenology Symmetry studies represent one of the most promising frontiers in particle physics research. This investigation focuses on exploring $P$ and $CP$ symmetries in the charm system through the measurement of asymmetry decay parameters in the three-body decay of $Ξ_c^{+}$. Incorporating electron and positron beam polarization effects and utilizing the helicity formalism, we characterize the decay of $Ξ_c^{+}$ and its secondary hyperons through asymmetry decay parameters. The complete angular distribution formula for these decays has been systematically derived. Our study evaluates the sensitivity of the asymmetry parameters for the $Ξ_c^{+} \to Ξ^{-}π^{+}π^{+}$ decay channel under various data sample sizes and beam polarization scenarios. These findings establish a robust theoretical framework for future experimental studies at the STCF, providing valuable insights for symmetry investigations in the charm sector. |
| title | Study of $P$ and $CP$ symmetries in $Ξ^+_c\rightarrow Ξ^-π^+π^+$ at electron-positron collider |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2510.15320 |